4 Rexroth Ball Rail Systems Product Description Make up your own compact linear motion guideways from interchangeable standard stock elements... Rexroth manufactures its guide rails and runner blocks with such high precision, especially in the ball track zone, that each individual component element can be replaced by another at any time. This makes infinite combinations possible within each accuracy class. This enables a high standards of logistics that are unique worldwide. Each element can be individually ordered and separately stocked. Both sides of the guide rail can be used as reference edges. Highlights: Top load capacities in all load directions Lowest possible noise level and best running characteristics Excellent dynamic characteristics: v up to 5 m/s; a max up to 500 m/s2 New: high-speed version v max = 10 m/s; a max = 500 m/s 2 Long-term lubrication, up to several years Minimum quantity lubrication system with integrated tank for oil lubrication Lube ports with metal threads on all sides Limitless interchangeability due to standardized guide rails, with or without rail seal cover strip, for all runner block versions Optimum system rigidity through preloaded O-arrangement Optimum installation error compensation with super runner block 60 % weight saving with aluminum runner block compared to the steel version Interchangeability with Rexroth roller rail system Integrated, inductive and wear-free measuring system as an option Comprehensive range of accessories Runner block can be screw fitted from above or below * Improved rigidity under lift-off and side loading conditions when additional mounting screws are used in holes provided at the center of the runner block * Guide rails and runner blocks also available with surface protection as an option Front face securing threads for all attachments High rigidity in all load directions can therefore be used as an individual block Integral, all-round sealing High torque load capacity Optimized entry-zone geometry and the high number of balls per track greatly reduce fluctuation in elastic deflection Smooth, light running due to optimized ball recirculation and ideal ball/ball retainer track geometry Various preload classes New: corrosion-resistant steel version of runner block and guide rail complying with DIN EN Proven rail seal cover strip for guide rail mounting holes: One cover for all holes, saves time and costs Made of corrosion-resistant spring steel DIN EN Easy, secure mounting Clip-on and fasten * depends on type RE /

9 Size Version Load capacities Without chain C (N) Without chain C 0 (N) Without chain C (N) Without chain C 0 (N) Without chain C (N) Without chain C 0 (N) Without chain C (N) Without chain C 0 (N) Without chain C (N) Without chain C (N) Without chain C (N) With chain C (N) Without chain C (N) With chain C (N) Basis for load capacities: Determination of dynamic load capacity C is based on a travel life of m to DIN 636. However, frequently this is determined on the basis of only m. The specified values C are then to be multiplied by RE /

11 Size Version Load capacities Without chain C (N) Without chain C 0 (N) Without chain C (N) Without chain C 0 (N) Basis for load capacities: Determination of dynamic load capacity C is based on a travel life of m to DIN 636. However, frequently this is determined on the basis of only m. The specified values C are then to be multiplied by Size Maximum unit length (mm) RE /

13 Size Version Load capacities Without chain C (N) With chain C (N) Without chain C 0 (N) With chain C 0 (N) Without chain C (N) With chain C (N) Without chain C 0 (N) With chain C 0 (N) Basis for load capacities: Determination of dynamic load capacity C is based on a travel life of m to DIN 636. However, frequently this is determined on the basis of only m. The specified values C are then to be multiplied by Size Maximum unit length (mm) RE /

15 Size Version 20/40 25/70 35/90 Load capacities Without chain C (N) Without chain C 0 (N) Basis for load capacities: Determination of dynamic load capacity C is based on a travel life of m to DIN 636. However, frequently this is determined on the basis of only m. The specified values C are then to be multiplied by Maximum unit length (mm) Lubrication plate Scraper plates Protective bellows 15 RE /

16 Rexroth Ball Rail Systems General Technical Data and Calculations General Notes The general technical data and calculations apply to all ball rail systems (all runner blocks and rails). Specific technical data referring to the individual types is given separately. Preload classes With the various application requirements in mind, Rexroth Ball Rail Systems are available in four different preload classes. So as not to reduce the service life, the preload should not exceed 1/3 of the load on bearing F. In general, the rigidity of the runner block rises with increasing preload. Guide Systems with Parallel Rails for the selected preload class, also comply with the permitted parallelism deviation of the rails (see tables for each version). When fitting ball rail systems of accuracy class N, we recommend the version with clearance or preload class 0.02C to avoid incorrect preloads due to the tolerances. Speed v max : 3 to 10 m/s For exact values, refer to the individual runner block. Acceleration a max : 250 to 500 m/s 2 For exact values, refer to the individual runner block. Only in the case of preloaded systems. In the case of non-preloaded systems. a max = 50 m/s 2 Temperature resistance t max = 100 o C Maximum value, only permitted for brief period. In continuous operation, do not exceed the maximum temperature of 80 C. RE /

17 Friction The friction coefficient µ of Rexroth Ball Rail Systems is approx to (without friction of the seals). Rexroth s special design with 4 ball circuits ensures that the balls make contact at two points regardless of the direction of loading. This reduces the friction to a minimum. Other ball rail systems with 2 or 4 ball circuits with 4-point contact have multiple friction: the differential slip at side loading of the Gothic track zone profile shape as well as with comparable preload without load causes higher friction (depending on osculation and load up to approx. 5 times the frictional value). This high friction leads to correspondingly greater heat. Seals The purpose of seals is to prevent dirt, swarf etc. from penetrating inside the runner block and thus shortening its service life. Universal Seals Universal seals are incorporated as standard in Rexroth Runner Blocks. They provide equal sealing performance on guide rails with and without rail seal cover strips. Low friction combined with a good sealing effect was an important factor during design. Suitable for applications requiring good sealing. Special low-friction seals are available on request. Front Seal Front seals can be ordered separately as accessories for mounting by the customer. Viton and NBR seals can be ordered separately for mounting by the customer. For use in environments with fine dirt or metal particles and cooling or cutting fluids. For extreme use in environments with coarse dirt or metal particles or where cooling or cutting fluids are used intensively. Scraper plate Scraper plates can be ordered separately as accessories for mounting by the customer. For use in environments subject to coarse dirt or swarf. 17 RE /

20 Rexroth Ball Rail Systems Selection Criterion Accuracy Class Accuracy classes and their tolerances (µm) Rexroth Ball Rail Systems are offered in up to five different accuracy classes. H P 1 For available versions see table "Part Numbers". A 3 P 1 P 1 Built-in interchangeability through precision machining Rexroth manufactures its guide rails and runner blocks with such high precision, especially in the ball track zone, that each individual component element can be replaced by another at any time. A runner block can be used without problems on various guide rails of the same size, for example. This applies equally to the use of different runner blocks on one and the same guide rail. * Tolerances for the combination of different accuracy classes for runner blocks and guide rails are available on request Parallelism offset P 1 of the ball rail system in service Accuracy Tolerances* Max. difference in dimension classes dimensions H and A 3 (µm) H and A 3 on one guide rail H A 3 H, A 3 (µm) UP ± 5 ± 5 3 SP ± 10 ± 7 5 P ± 20 ± 10 7 H ± 40 ± N ± 100 ± Measured at middle of runner block: 50 For any runner block/rail combination at any position on rail For different runner blocks at same position on rail Measured at middle of runner block 40 N 30 H 20 P 10 SP UP Key to Illustration P 1 = parallelism offset L = rail length RE /

21 Selection Criterion System Preload Definition of the Preload Class Preload force in relation to the dynamic load capacity C dyn of each runner block. Example: Runner Block C dyn = N Preload 0.02 C = 838 N This runner block is preloaded with approx. 838 N base load. Selection of the Preload Class On the versions with clearance, no preload is achieved. It is more the case that there is clearance between the runner block and guide rail of between 1 and 10 µm. With two rails and use of more than one runner block per guide rail, this clearance is usually equalized by parallelism tolerances. Version up to 10 µm clearance Preload 0.02 C Area of Application For particularly smooth guide systems with the lowest possible friction and a minimum of external influences. Clearance versions are only available in accuracy classes N and H. For exact guide systems with low external load and high requirements as regards overall rigidity. Preload 0.08 C For exact guide systems with simultaneous high external load and high requirements as regards overall rigidity; also recommended for one-rail systems. Above-average moment loads are absorbed without significant elastic deformation. With only medium moment loads, further improved overall rigidity. Preload 0.13 C For highly rigid guide systems, e.g. precision machine tools or injection molding closing devices. Above-average loads and moments are absorbed with the lowest possible deformation. Version with preload of 0.13 C is only available in accuracy classes P, SP and UP. Elastic deflection depending on preload class Example: Runner Block , Size 35 a) Runner Block with preload 0.02 C b) Runner Block with preload 0.08 C c) Runner Block with preload 0.13 C a b c RE /

22 Rexroth Ball Rail Systems Standard Runner Blocks, Steel Version Excellent properties: Top load capacities in all 4 main load directions Low noise level and outstanding running characteristics Excellent dynamic characteristics v = 5 m/s; a max = 500 m/s2 Long-term lubrication, up to several years possible Minimum quantity lubrication system with integrated tank for oil lubrication Lube ports with metal threads on all sides Limitless interchangeability due to standardized guide rails, with or without rail seal cover strip, for all runner block versions Optimum system rigidity through preloaded O-arrangement Integrated, inductive and wear-free measuring system as an option Existing range of accessories fully utilizable Top logistics that are unique worldwide due to interchangeability of components within one accuracy class Further highlights: Runner block can be screw fitted from above or below Improved rigidity under lift-off and side loading conditions when additional mounting screws are used in holes provided at the center of the runner block Front face securing threads for all attachments High rigidity in all load directions can therefore be used as an individual block Integral, all-round sealing High torque load capacity Optimized entry-zone geometry and the high number of balls per track greatly reduce fluctuation in elastic deflection Smooth, light running due to optimized ball recirculation and ideal ball/ball retainer track geometry Various preload classes Available with surface protection as an option New: corrosion-resistant version of runner block complying with DIN EN With ball retainer as an option * * depends on type RE /

60 Rexroth Ball Rail Systems Product Overview Super Runner Blocks s Steel Version Excellent properties Automatically compensates for errors in alignment of up to 10' arc about two axes Extra-compact design Identical load capacities in all four main directions Wider permissible tolerances for parallelism and height of mounting surfaces Accuracy classes H and N Preload class: clearance and 2% preload Smooth running due to optimized ball recirculation and entry-zone geometry Make up your own compact linear motion guideways from interchangeable standard stock elements... Rexroth manufactures its guide rails and runner blocks with such high precision, especially in the ball track zone, that each individual component element can be replaced by another at any time. This makes infinite combinations possible within each accuracy class. Self-alignment The Rexroth Super Runner Block with self-aligning feature automatically compensates for errors in alignment to 10' of arc. There is no load capacity reduction through compression across the edges. The center of the mating surfaces supporting the steel load bearing plates serve as a rocking fulcrum. Therefore slight errors in alignment between runner block and guide rail do not cause problems. Also, inaccuracies in machining, mounting errors or guide rail bending will automatically be corrected. The self-aligning feature assures smooth entry and exit of the balls into and out of the load-carrying area and uniform load distribution over the entire row of balls. The result is extra-smooth running and considerably longer service life. With two runner blocks on one guide rail, it is also possible to produce tilt-free linear rolling motion guides with a high load capacity, particularly for handling applications. RE /

66 Rexroth Ball Rail Systems Product Overview Runner Blocks, Aluminum Version Excellent Properties Rexroth Ball Rail Systems with aluminum runner blocks were specifically developed for use in industrial robots and general purpose machines calling for compact, rolling-element linear motion guideways and are available in different accuracy classes, each with high load capacity and high rigidity. These compact and weight-saving assemblies are available in 4 common sizes and offer the same high dynamic load capacities in all four main load directions. High torque load capacity Optimized entry-zone geometry and the high number of balls per track greatly reduce fluctuation in elastic deflection Very low weight: 60% lighter than the equivalent steel version Further Highlights Wider permissible tolerances for parallelism and height of mounting surfaces Accuracy classes H and N can be combined with any of the rails in each accuracy class Lube bore at either end for added ease of maintenance End face mounting holes for attachment of bellows or scraper plates Guide rails in accuracy class N also available with surface protection Smooth, light running due to optimized ball recirculation and ideal ball/track geometry Improved rigidity under lift-off and side loading conditions when additional mounting screws are used in holes provided at the center of the runner block Attachments can be mounted to runner block from above or below Pre-drilled locating pin holes in runner blocks RE /

67 Make up your own compact linear motion guideways from interchangeable standard stock elements... Rexroth manufactures its guide rails and runner blocks with such high precision, especially in the ball track zone, that each individual component element can be replaced by another at any time. This makes infinite combinations possible within each accuracy class. Each element can be individually ordered and separately stocked. Both sides of the guide rail can be used as reference edges. The runner block is simply pushed onto the rail. 67 RE /

72 Rexroth Ball Rail Systems Product Overview High-speed Runner Blocks Excellent properties of the new runner blocks: Excellent dynamic characteristics v = 10 m/s; a max = 500 m/s2 High load capacities in all 4 main load directions Long-term lubrication, up to several years Minimum quantity lubrication system with integrated tank for oil lubrication Lube ports with metal threads on all sides Limitless interchangeability due to standardized guide rails, with or without rail seal cover strip, for all runner block versions Optimum system rigidity through preloaded O-arrangement Electrically insulating with the deployment of ceramic balls Existing range of accessories fully utilizable Worldwide unique top logistics Further highlights: High speed due to low mass of the ceramic balls Runner block can be screw fitted from above or below Improved rigidity under lift-off and side loading conditions when additional mounting screws are used in holes provided at the center of the runner block Front face securing threads for all attachments High rigidity in all load directions can therefore be used as an individual block Integral, all-round sealing High torque load capacity Optimized entry-zone geometry and the high number of balls per track greatly reduce fluctuation in elastic deflection Smooth, light running due to optimized ball recirculation and ideal ball/track geometry Various preload classes Available in 5 common sizes RE /

94 Rexroth Ball Rail Systems Product Overview Ball Rail Systems Made of Corrosion-Resistant Steel Ball rail systems made of corrosion-resistant steel* are used especially in conjunction with watery media, diluted acids, alkalis or salt solutions. These rail systems are extremely well suited for deployment at relative air humidity above 70% and temperatures above 30 C. Conditions like this are found above all in cleaning systems, galvanization and pickling systems, steam degreasing systems and also cooling machines. As no additional corrosion protection is required, ball rail systems made of corrosion-resistant steel are very well suited for deployment in clean rooms and general printed circuit board production. Other possibilities for deployment are in the pharmaceuticals and food industries. Excellent properties All metal parts are made of corrosion-resistant steel Available in 5 common sizes Excellent dynamic characteristics v = 5 m/s; a max = 500 m/s2 Same load capacities in all 4 main load directions Available in accuracy classes N, H and P, up to preload class 0.08 C Long-term lubrication, up to several years possible Minimum quantity lubrication system with integrated tank for oil lubrication Lube ports with metal threads on all sides Unrestricted interchangeable design: can be combined with standard steel guide rails or standard and high-speed runner blocks made of steel or aluminim Optimum system rigidity through preloaded O-arrangement Existing range of accessories fully utilizable Runner block can be screw fitted from above or below Improved rigidity under lift-off and side loading conditions when additional mounting screws are used in holes provided at the center of the runner block Front face securing threads for all attachments High rigidity in all load directions can therefore be used as an individual block Integral, all-round sealing Optimized entry-zone geometry reduces fluctuation in elastic deflection Smooth and gentle running Further Highlights Guide rails available with or without rail seal cover strip Guide rails available for mounting from above or below Runner blocks also available with chromium-plated guide rails Optional The same load capacities as standard runner blocks because of design with balls made of rolling bearing steel in conjunction with hard chromium-plated guide rail * for roller bearing applications complying with DIN EN RE /

114 Rexroth Ball Rail Systems Accessories for Standard Runner Blocks Mounting lubrication adapter A lubrication adapter is required for high runner blocks if lubrication is to be carried out from the table section. 2 dia.0.8 In the recess for the O-ring, a further small recess (1) has been preformed. Do not open this with a drill bit. Danger of contamination! Preheat the metal tip (2) with a diameter of 0.8 mm. Carefully open the recess (1) with the metal tip and pierce through it. Observe the maximum permissible depth T max indicated in the table! Insert O-ring (3) in the recess. Insert lubrication adapter at an angle in the recess and press the flattened side (4) against the steel section (5). Use grease when locating. Insert O-ring (6) in the lubrication adapter Size Lube hole at top: max. perm. depth for piercing T max (mm) T max RE /

117 Accessories for Standard Runner Blocks Initial Lubrication of the Runner Blocks Prior to mounting the front lube units, initial lubrication of the runner block with lubrication grease is required! Recommended lubrication greases: Paragon EP 1, DEA, KP 1 N-30 Optimol Longtime PD 1, [made by] Optimol Ölwerke, KP 1 N-40 Optimol Longtime PD 2, [made by] Optimol Ölwerke, KP 2 N-40 Klüber Isoflex NCA 15 Klüber Polylub GLY 151 Klüber Microlube GL 261 Lubrication of the runner blocks If there is already lubricant in the runner block, or if other lubrication greases other than those recommended have to be used: see "Compatibility of Lubricants". 1. Lubricate runner blocks according to table. 2. Slide runner block back and forth over at least three times the block length for three full cycles. 3. Repeat steps 1. and 2. two more times 4. Check whether a film of lubricant is visible on the guide rail. Size Partial lubricant quantity for initial lubrication of the runner block (cm 3 ) Front Lube Unit Shipped Condition There are two versions of front lube units. The part numbers mean: : ready for mounting, filled with lubrication oil : without lubrication oil Initial filling of a front lube unit without oil (part numbers ) Recommended lubrication oil: Mobil SHC 639 (viscosity 1000 mm 2 /s at 40 C) If other lubricants have to be used: see "Compatibility of Lubricants". Remove the set screw from the lube bore (1) and keep in a safe place. Screw in the lube nipple (2). Lay the front lube units (3) out flat; fill the oil quantity listed in the table; leave to settle for approx. 36 hours. Size Oil quantity for initial filling of front lube unit (cm 3 ) For size 20 low profile: place the front lube units in 10 cm of oil for approx. 36 hours (! Fig. B). Check whether the lube insert is complete soaked in oil. If necessary, add oil. Remove the lube nipple. Tighten the set screw. A B Oil quantity Size 20 low profile ~10 mm Compatibility of Lubricants Synthetic lubricants are superior to those based on mineral oils, especially paraffin oils. The standard oil filling in the front lube units is Mobil SHC 639. This oil is a fully synthetic lubricant based on synthetic hydrocarbons (polyalphaolefine). Mobil SHC 639 can be mixed with mineral oils in any ratio. Compatibility with Rexroth corrosion-protection oil is ensured. Mobil SHC 639 is also chemically compatible with lubrication greases whose base oil is synthetic hydrocarbon oil, polyalphaolefin, mineral oil or ester oil. If other lubricants are used, check the compatibility of lubrication oil and lubrication grease. Minimum requirements for lubrication oils: oils of the ISO viscosity class 1000, in accordance with DIN 51519, without solid lubricant content, e.g.: lubrication oil CLP according to DIN 51517, part 3. The lubrication oils must be chemically and physically comparable with Mobil SHC 639. Incompatibilities are to be expected in particular with lubrication greases whose base oil is silicone oil, polyglycol oil, polyphenylether oil or perfluoralkylether oil. 117 RE /

118 Rexroth Ball Rail Systems Accessories for Standard Runner Blocks Mounting Front Lube Units Comes complete with coated mounting screws, additional front seals, and lubricating nipple. Mount one front lube unit (3) on each side of the runner block! 5 3 Do not take the runner block off the guide rail! Push on the front lube units (3). Remove set screws (5) and insert O-rings (6) between the runner block and front lube units. Tighten the screws (4) with tightening torque M A MA (Nm) 15 M2.5 x M3 x M3 x M3 x M3 x M4 x M5 x M4 x In-service lubrication intervals for runner blocks Check front lube units if travel life does not match that in table. The travel life applies with: Normal operating conditions and load in accordance with table. On reaching the travel life in the table or at the latest after 3 years, we recommend that you replace the front lube units and grease the runner block before mounting the new front lube unit. Under clean operating conditions, the runner block front faces can be lubricated by the front lube unit with grease. The front lube units can be filled with oil. Lubrication quantities, see "Initial Lubrication of the Runner Block" and "Initial Filling of a Front Lube Unit Without Oil". In ongoing service life tests, longer travel lives have already been achieved. Please ask for information if required! Size Travel life under normal operating conditions Travel (km) Load 0.15 C The intervals of the in-service lubrication recommendation depend on the ambient influences, load and type of load. Ambient influences are, for example, fine swarf, mineral and similar abrasion, solvents and temperature. Load and the type of load are, for example, vibrations, bumps and tilts. The manufacturer is unaware of the conditions of use. Security with regard to in-service lubrication intervals can only result from the user's own tests or precise observations. Do not use diluted cooling lubricant on guide rails and runner blocks! RE /

120 Rexroth Ball Rail Systems Notes on rail seal cover strip Advantages of the rail seal The rail seal is easy to clip on and remove. This considerably facilitates and speeds up the mounting process: - no need to plug each single hole. - no time delay while waiting for adhesive to harden when using adhesive tape. The rail seal can be mounted and removed (up to 4 times) The rail seal is a precision-machined part that must be handled with great care. It must on no account be bent. Versions/Functions A Snap-fit rail seal (standard) - The rail seal is clipped on before the runner block is mounted and fits tightly. B Sliding-fit rail seal - For mounting or replacing a rail seal when the runner block or superstructure cannot be removed. - A section of the snap-fit rail seal is very slightly widened and can then be easily slid under the runner block. A B An arbor (available as an option) for 0.15 mm rail seals or a special expanding tool for 0.3 mm rail seals can be used to create the sliding fit after installation in order to be able to remove a rail seal. The main advantage is that the length X of the sliding fit can be optimized to suit the installation conditions. Observe the detailed mounting instructions! Part numbers, see chapter "Accessories for Standard Guide Rails". X X RE /

123 Accessories for Guide Rails Mounting tool set for rail seal cover strip For clipping on the rail seal cover strip, there is a mounting tool (A); for removal, there is a lifting plate (B). Size Part number Mounting tool + lifting plate For more detailed information on how to mount cover strips, see "Mounting instructions for rail seal cover strip" RDEFI A B Arbor for creation of a sliding fit on rail seal cover strip Part numbers, see product table For more detailed information on manufacturing and mounting cover strips with sliding fit, see "Mounting instructions for the rail seal cover strip" RDEFI Size Part numbers Arbor RE /

126 Rexroth Ball Rail Systems Product Description, Wide Ball Rail Systems Excellent properties Due to very high moment and torsional rigidity, particularly suitable for single rail applications High torque load capacity Optimized entry-zone geometry and the high number of balls per track greatly reduce fluctuation in elastic deflection Further Highlights Integral, all-round sealing Innovative cage design allows for longer lubrication intervals At both end faces, 4 lubrication connections each, making it extremely easy to maintain End face mounting holes for attachment of bellows or scraper plates Guide rails and runner blocks in accuracy class N (clearance and preload 0.02 C) also available with surface protection Guide rail with low clearance or light preload Smooth, light running due to optimized ball recirculation and ideal ball/track geometry Improved rigidity under lift-off and side loading conditions when additional mounting screws are used at the center of the runner block Attachments can be mounted to runner block from above or below RE /

127 Make up your own compact linear motion guideways from interchangeable standard stock elements... Rexroth manufactures its guide rails and runner blocks with such high precision, especially in the ball track zone, that each individual component element can be replaced by another at any time. This makes infinite combinations possible within each accuracy class. 127 RE /

143 General Mounting Instructions General Notes The following notes relating to mounting apply to all ball rail systems. However, different specifications exist with regard to the parallelism of the guide rails and to mounting the runner blocks with locating pins. This information is provided separately alongside the descriptions of the individual types. Rexroth Ball Rail Systems are high-grade quality products. Particular care must be taken during transportation and subsequent mounting. All steel components are protected with anti-corrosion oil. Preservative substances do not need to be removed provided the recommended lubricants are used. Mounting examples Guide rails: Each guide rail has ground contact surfaces on both sides. Possibilities for side fixing: 1 Reference edges 2 Retaining strips 3 Wedge-profile retaining strip Note Guide rails without side fixing have to be aligned straight and parallel when mounting, preferably to an auxiliary strip. (recommended limits for side load if no additional lateral retention is provided, see individual types) Runner Blocks: Each runner block has a ground reference edge on one side (!Dimension V 1 in the dimension drawings). Possibilities for additional fixing: 1 Reference edges 2 Retaining strips 4 Locating pins Note After mounting, it should be possible to move the runner block easily. Mounting with fixation of both guide rails and runner blocks 4 1 Mounting with fixation of a guide rail and runner block Mounting Instructions For detailed mounting steps, see "Mounting Instructions for Ball Rail Systems" RDEFI RE /

153 Mounting Instructions Composite guide rails Guide rails made up of two sections L mm 2.5 mm dia.0.4 x n B a) Sections of a composite guide rail that belong together are already indicated as such by a label on the packaging. c) d) c) Guide rails made up of three or more sections All sections of the same rail have the same number. L mm 2.5 mm dia.0.4 x n B b) a) b) a) c) d) d) c) n B Number of holes a) Joint b) Counter number c) Complete rail identification on first and last section d) Code number of the joint Note on rail seal cover strip For composite guide rails, a one-piece rail seal to cover the total length L is supplied separately. 153 RE /

154 Rexroth Ball Rail Systems Maintenance and Lubrication Maintenance Dirt can settle and encrust on guide rails, especially when these are not enclosed. To ensure that seals and rail seal cover strips retain their functionality, this dirt must be removed at regular intervals. It is advisable to run the machine through a full "cleaning cycle" over the entire installed rail length at least twice a day, but no later than at the end of every 8-hour shift. Always run a cleaning cycle before shutting down the machine. Lubrication Grease Lubrication Greases with solid lubricant content (such as graphite or MoS 2 ) must not be used! Rexroth Ball Rail Systems are delivered filled with an anti-corrosion agent. Either oil or grease can be used as a lubricant. We recommend a lubricant grease to DIN 51825: K2K with normal loads KP2K with higher loads Consistency class NLGI 2 complying with DIN 51818, can be purchased through Rexroth (cartridge, content 400 g). Part number: Before start-up, make sure the system has sufficient initial lubrication. Observe the information provided by the manufacturers, in particular with regard to incompatibilities. Always lubricate runner blocks before start-up (initial lubrication) Initial lubrication requires a total of three times the partial quantity given in table 1: 1. Apply the first partial quantity of lubricant as per table 1 to runner block. 2. Slide runner block back and forth over at least three times the block length for three full cycles. 3. Repeat steps 1. and 2. two more times 4. Check whether a film of lubricant is visible on the guide rail. Size Grease lubrication Initial lubrication In-service partial quantity lubrication (cm 3 ) (cm 3 ) (x 3) (x 3) (x 3) (x 3) (x 3) (x 3) (x 3) (x 3) / (x 3) / (x 3) / (x 3) 2.7 Table 1 In-service lubrication of runner blocks Once the in-service lubrication interval as given in table 2 or 3 is reached, apply the lubricant quantity as stated in table 1. If the equipment is to operate in an environment subject to contamination, vibration, shock loads, etc., or where cooling lubricants are used, we recommend shortening the in-service lubrication interval. The smaller the load, the longer the intervals between in-service lubrication will be. For runner blocks, with ball retainer as an option: , Size In-service lubrication intervals under normal operating conditions Travel (km) Load 0.15 C Table 2 For runner blocks: , Size In-service lubrication intervals under normal operating conditions Travel (km) Load 0.15 C / / / Table 3 RE /

157 Maintenance and Lubrication Lubricating from above Lubricating from above without lubrication adapter For all runner blocks with preparation for lubrication from above (exceptions: standard runner blocks and ). 2 dia In the recess for the O-ring, a further small recess (1) has been preformed. Do not open this with a drill bit. Danger of contamination! Preheat the metal tip (2) with a diameter of 0.8 mm. Carefully open the recess (1) with the metal tip and pierce through it. Observe the maximum permissible depth T max indicated in the table! Insert round sealing ring (3) in the recess (the round sealing ring is not supplied with the runner block) Size Lube hole at top: max. perm. depth for piercing T max (mm) T max Special Lube Ports Lube ports mounted on the top (1) or on the sides (2) are available on request RE /

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Crossed Roller Ways Description of each series and Table of dimensions Crossed Roller Way Page - to -7 Anti-Creep Cage Crossed Roller Way Page - to - Crossed Roller Way Unit Page - to - In the table of

PRECISION BELLOWS COUPLINGS Bellows couplings are used where precise rotation, high speeds, and dynamic motion must be transmitted. They exhibit zero backlash and a high level of torsional stiffness, offering

-Lube Linear Way 49 50 -Lube Maintenance Free Series -Lube Linear Way Long term maintenance free compliant! The aquamarine end plate is the symbol of maintenance free. Designation of Identification Number